can some one suggest me the recent OFF page techniques that can help me in building quality backlinks and generate good traffic ?

To start with there are 2 things that most SEOs forget,

SEO is not the only online promotion available

& Off-page is not limited to Link Building

Most SEOs are worried about links and links alone, and in fact most amateur SEOs assume off-page is nothing but link building, and SEO is nothing but link spamming..!

And that's why most online webmasters are worried to let SEOs any way close to their website's content creation parts.

Beyond Link building: Off-page is just one part of SEO the others being On-page and Analytics. And although link building is a major task in off-page, it is certainly not the only part. Brand building, social strength, and external content creations are all active and effective elements of off-page strategies that can leave an even greater positive image in the eyes of Google than spammy links.

Importance of Branding: In recent times Brand value of a website plays a crucial role and determining it's SERP results.

Beyond SEO:
You can also focus on creating no link related presence on local sites, business listing, (some of which won't provide a link, and yet they are useful for SEO and in lead generation). At the end of the day, a good marketer's job is not to rank for a keyword, but to promote the business and increase the revenue and reputation of the business.